水工建筑物可变作用荷载主要包括
A.结构自重
B.地应力
C.静水压力
D.扬压力
E.预应力
参考答案：C, D
腹壁出现紫纹见于
A．急性胰腺炎
B．皮质醇增多症
C．胃肠穿孔
D．腹膜炎
E．肠梗阻
American people were proud and optimistic because they felt they had saved the world and now were helping to rebuild Europe and Japan.
